baber/WOPTO huggingface dataset:
Patent GB-889872-A (GB)
Title: A method of treating a semi-conductor device
IPC: C23F1/40
Filed: 1958-03-05
Abstract: 889,872. Semi-conductor treatment. SARKES TARZIAN Inc. March 5, 1958 [April 24, 1957], No. 7135/58. Drawings to Specification. Class 37. A method of treating the exposed boundary of a PN junction in a semi-conductor to improve reverse current resistivity, comprises immersing the junction in a dilute aqueous solution of an inorganic material, alkaline or basic in nature, containing a wetting agent. The treatment is preferably carried out at the boiling temperature of the aqueous solution, at which temperature the reaction is complete in a minute or less. Lower temperatures may be used if extended time is allowed. Solutions referred to include those of basic salts such as sodium carbonate, sodium bicarbonate, potassium carbonate, sodium acetate, sodium metasilicate, and other salts of alkaline earth and alkali metals which in dilute solutions (i.e. concentrations of 1 to 15%) produce aqueous solutions having pH values of 10-12 or higher. Dilute solutions of sodium or potassium hydroxide are also said to be satisfactory. The solution should also contain from ¢ to 3% of a wetting agent such as trisodium phosphate or an alkali metal salt of a detergent sulfonate or a non.-ionic wetting agent such as polyoxyethylene derivatives of hexitol anhydride or long chain fatty acid partial esters of hexitol anhydride. Examples quoted. Silicon plates with a dot of an alloy of aluminium, tin and gallium fused to the surface to form a PN junction are etched in caustic soda, and then in nitric acid, washed and then treated by immersion, either for 3 seconds in a boiling aqueous solution containing 15% by weight of sodium carbonate and 1% of sodium triphosphate, or for 30 seconds in a 2% aqueous solution of sodium hydroxide with 0.5% of polyethylene polypropylene oxide at 60‹ C., the junctions so treated are then washed in pure water and dried at 150‹ C.
Patent GB-346927-A (GB)
Title: Method of making sheet glass
IPC: C03B13/12
Filed: 1930-03-05
Abstract: 346,927. Glass manufacture. MISSISSIPPI GLASS CO., 220, 5th Avenue, New York, U.S.A.-(Assignees of Begeman, M. L. ; 110, Ferry Street, St. Louis, Missouri, U.S.A.) March 5, 1930, No. 7171. Convention date, May 21, 1929. [Class 56.] Rolling.-Apparatus for making sheet glass, particularly wire glass, comprises a pair of forming rolls 30, 32, furnace lips 16 from which molten glass pours on to the upper surfaces of each roll, and an adjustable gate 38 adjacent to each of the rolls whereby, as the rolls rotate, sheets of glass 36 are formed on the rolls and are carried to the pass between the rolls, where they are united to form a single sheet 44. Wire mesh 34 may be fed downwards between the rolls and become embedded in the finished sheet. By adjusting the position of the gates 38, a sheet of any desired thickness can be produced. The Specification as open to inspection under Sect. 91 (3) (a) describes also a construction in which a single furnace spout and adjustable gate is used. This subjectmatter does not appear in the Specification as accepted.
Patent GB-235506-A (GB)
Title: Improved process for separating scale forming salts from boiler feed water and for removing scale already formed
IPC: C02F5/10
Filed: 1925-03-17
Abstract: 235,506. Sichert, J. March 17, 1925. Addition to 204,027. Incrustation and corrosion, preventing and removing.-Instead of a gum resin such as olibanum, as described in the parent Specification, there is used any kind of resin rendered emulsive in water or colloidally soluble in hot water by appropriate additions such as colloids. The additions are generally in the form of gums, mucilage or soaps.
Patent GB-1071544-A (GB)
Title: Method for producing polyesters
IPC: C08G63/66
Filed: 1965-02-19
Abstract: A polyester is prepared from at least one dicarboxylic acid and at least one n-alkylene glycol of 2-10 C atoms, or functional derivatives of these, and at least one ether diol of the formula <FORM:1071544/C3/1> wherein G is an alkylene group having 2-6 C atoms or a group -CH2(CH2OCH2)nCH2- wherein n is 1,2 or 3, one of each of the pairs R1 and R2, and R3 and R4, is hydrogen, and the other is a group -CH2(OCH2CH2)mOR wherein m is 0, 1 or 2 and R is a hydrocarbon group having 1-18 C atoms, l1 and l2 are each 0 or integers satisfying the relation 4\sFl1+l2\sF1, or 4 - n\sF l1+l21\sF when G is the ether group above. The branched diol may amount to 1-40 mol per cent of the acid components of the resin, and may be prepared by the reaction of ethylene glycol with glycidyl ether in the presence of a catalyst.  Suitable polyesters are obtained from terephthalic acid or dimethyl terephthalate and ethylene glycol and a branched diol of the invention.  A number of the branched diols are exemplified, of which the majority are diethylene glycols substituted in the a - or b - position by alkoxymethyl, alkoxyethoxymethyl or alkoxyethoxyethoxymethyl groups.
Patent GB-384978-A (GB)
Title: Improvements in method of determining index captions
IPC: B42F17/00
Filed: 1931-03-09
Abstract: 384,978. Indexing. REMINGTON RAND, Inc., 465, Washington Street, Buffalo, New York, U.S.A. March 9, 1931, No. 7263. Convention date, March 8, 1930. Void [Published under Sect. 91 of the Acts]. [Class 16.] In filing-systems employing guide-cards having index-bearing tabs, the index-captions or indicia to be placed on the additional guidecards, which are inserted in the file as it expands, are determined according to a method that ensures that all the subdivisions of the file are maintained of substantially uniform size. Tables are first prepared for the area of territory to which the index relates showing the relative distribution of names or groups of names occurring under each letter of the alphabet, and also the relative sizes of the different letters, as indicated by the number of names occurring under them. The primary guidecards are devoted one to each letter, two or more of the smaller letters being represented by one guide-card, in order to maintain the sections of approximately uniform size, and, in further subdivision, some letters may have two or more guide-cards, as shown in Fig. 1. In subdividing any letter, the names occurring under it are divided into two unequal parts in the proportion of 44 to 56. The point of division is determined by counting 44 per cent of the names occurring under any given letter, such as " K," from each end of the section. This gives, in general, a choice of two twoletter captions, say, " Ki " and " Ko," for the insertion of the guide-card, and the larger of the two sections is chosen. The same method is followed for the insertion of subsequent guide-cards, which may bear captions of three or more letters, as shown in Fig. 2, the larger sections being first chosen for subdivision, so that the size of the sections remains substantially uniform. In addition to the captions, each guide-card bears indications of the order of its insertion, and of the total number of subdivisions of which it is a unit.
Patent GB-250735-A (GB)
Title: Improvements in electrical condensers
IPC: H01G4/228
Filed: 1925-03-18
Abstract: 250,735. Dubilier Condenser Co., Ltd., (Dubilier, W.). March 18, 1925. Condensers comprise an electrically conductive jacket and a conductive plate therein, the plate having a terminal extension projecting outside the jacket and the latter being recessed or cut away adjacent the extension. In Figs. 2 and 4, the body of conducting sheets 1, 2 and dielectric 3 is encased in a jacket 4 against which the sheets 1 are folded, while the sheets 2 are folded under a contact plate 5 separated from the jacket by insulation 6. The plate 5 and jacket have projections 7 apertured at 8 and provided with lateral fingers 9 serving as terminals, and the jacket is cut away at 10, 11 to prevent sparking. In a modification, the jacket is a flattened sleeve separated from the contact plates and terminals by insulation and cut-away at one end, but in a further modification one plate may be dispensed with and the sleeve may serve as the other terminal.
Patent GB-350011-A (GB)
Title: Improvements in well drilling apparatus
IPC: E21B19/08
Filed: 1930-03-05
Abstract: 350,011. Well-drilling plant. SULLIVAN MACHINERY CO., 400, North Michigan Avenue, Chicago, U.S.A. March 5, 1930, No. 7288. Convention date, March 5, 1929. [Class 85.] In a rotary well-drilling apparatus with hydraulic feed mechanism arranged above the derrick floor adjacent the rotary table, the feed mechanism is slidably supported on guides so that it may be moved laterally to clear the table to permit of the usual drilling operations without such feed. As shown, a base 3 supports a rotary table 7 with a split bushing adapted to receive wedge-shaped drive or supporting slips 11 co-operating with the grief stem 13. Hydraulic feed cylinders 2, with liners 23, are connected by channel irons 20 and contain pistons 25 connected to a cross-head 29 with guiderods 38 engaging bosses 40 on the cylinders. A pivoted clamp 33, with spring latch 34, detachably secures a thrust head 46 to the cross-head. Supported between roller bearings 54 and ball bearings 51 in the thrust head is a swivel member 53 with upper and lower clutches 58, 59 for connection to the grief stem; the clutch 59 comprises slidable toothed jaws 61 operated by screws 63 and the clutch 58 comprises wedge slips 67 in a tapered casing 66. The wedge slips are released when desired by a pivoted lever 77 with rollers 75 adapted to engage a member 74 connected by links 72 to the slips. The feed cylinders are held on slides 22 by pivoted bolts 41. When the hydraulic feed is to be dispensed with, the clamp 33 and bolts 41 are released and the feed mechanism moved laterally away from the drill stem.
Patent GB-1094794-A (GB)
Title: Preparation of derivatives of n-acyl amino alkenes
Inventor: KURTZ PETER
IPC: C08F226/02
Filed: 1966-02-18
Abstract: N-Acylaminoalkenes are prepared by pyrolysing N-acyl derivatives of 1-amino-1-cyanoethane. The alkene group in the product may be substituted by hydrocarbon radicals which may constitute the ring members of carbocyclic 5- or 6-membered ring or the hydrogen atom on the nitrogen may be substituted by a saturated aliphatic hydrocarbon radical.  The cyanoethanes from which hydrogen cyanide is split off by the pyrolysis may be <FORM:1094794/C2/1> in which X,Y and Z represent an hydrogen atom or a linear or branched alkyl (1-6 C), or X and Y or Y and Z represent the ring members of a carbocyclic ring, W represents a hydrogen atom or a linear or branched alkyl (1-6 C) radical and R represents the acyl radicals of aliphatic monocarboxylic acids with (1-6 C) or of aromatic carboxylic acids such as benzoic or naphthoic acid which may be substituted with halogen or by linear or branched alkyl (1-4 C) radicals.  Examples describe the preparation of N-formyl-, N-acetyl-, N-butyryl-, N-benzoyl-, N-3-chloro-benzoyl-vinylamines, N-(a -naphthoyl)-N-vinylamine, N - acetyl - N - methylvinylamine, N-propionyl - N - ethylvinylamine, N - formylbutene - (1) -yl(1) - amine, N - acetyl - isopropenylamine, N - acetycyclohexane - (1) - yl(1)-amine and N-acetycyclohexylidene-methylamine.
Patent GB-217319-A (GB)
Title: A vitreous coated article and process for manufacturing same
IPC: C23D5/04
Filed: 1923-03-14
Abstract: 217,319. Crossley, P. B. March 14, 1923. Enamels; enamelling; cables.-Wire, plates, rails, and other articles are coated' with a vitreous product in which is dispersed a silicate of laminated or fibrous structure, for example, mica or asbestos, the melting point of the vitreous product being below the temperature at which the selected silicate begins to effloresce, about 900‹ C., so that the dielectric and other properties of the silicate are retained. The coating consists preferably of borates low in silica and alkalis, and has a co-efficient of expansion approximating to that of the metal article; one example is SiO2 under 5 per cent, FbO 68 to 75 per cent, and the balance B2O3; another example is SiO2 25 per cent, PbO 75 per cent. A paste may be formed of the selected silicate and the dispersion medium with a little clay, starch, or gum, and the paste may be applied to the article by pouring, spraying, dipping, or drawing, and' the article then fired. A dry mixture of the silicate and dispersion medium may be used instead of the paste described, or a paste of the dispersion medium may first be applied and then a dry powder of the silicate. The process may be varied by drawing the article through a molten bath of the mixture, or through a molten bath of the dispersion medium and then through the powdered silicate. The articles may be heated electrically or otherwise before being coated. The coated article may be passed through dies or rolls to consolidate the coating, with or without annealing. The molten vitreous product may be applied to the article by ejection from an oxy-acetylene spraying apparatus.
Patent GB-1381092-A (GB)
Title: Crystalline nickel chelate of 1-nitroso-2-naphthol and process for producing same
IPC: C07F15/04
Filed: 1973-02-15
Abstract: 1381092 Vinyl chloride copolymer compositions; nitrocellular compositions HERCULES Inc 15 Feb 1973 [24 Feb 1972] 7505/73 Headings C3F and C3P [Also in Division C4] A pigment composition comprising an intimate dispersion of an anhydrous, crystalline, light-stable, nickel chelate of 1-nitroso-2-naphthol and 0À1 to 1À0 moles, per mole of the chelate, of an inert water-immiscible ester which is a plasticizer for polyvinyl chloride, is a non- solvent for the chelate, and has a PaPt above about 200 C. is used to colour (1) a vinyl film and (2) a nitrocellulose lacquer. In Example 1, a vinyl film is formed from a mixture of a polyvinyl chloride containing 3% vinyl acetate, dioctylphthate, lead stearate and the nickel chelate, and a nitrocellulose lacquer from a mixture of two nitrocelluloses, dibutyl phthalate, oleic acid, toluene, ethyl acetate and the pigment.
Patent GB-713439-A (GB)
Title: Improved polishing apparatus
IPC: B24B31/02
Filed: 1951-04-02
Abstract: 713,439. Barrel polishing. DONISTHORPE, H. W. March, 31 1952 [April 2, 1951], No. 7572/51. Class 60 Apparatus for the tumbler polishing of articles comprises a stand 1, which is a skeleton structure made up of angle irons and includes end frames 2, 3 between which are rotatably mounted superposed pairs of steel rods, 4, 5. One rod only, viz. rod 4, of each pair is driven, the drive being from an electric motor 7 through chain and' sprocket transmission 8. Each tumbler barrel has a thick-walled, hollow, cast iron body 10 of hexagonal shape, both ends of the barrels being domed and closed by a screwed plug 12 having a handle 13. Each barrel has a pair of spaced collars 14 provided with a lining 15 of leather to contact the rods. Abutment collars 16 on the rods limit any tendency of the barrels to move along the rods. A number of stands can be placed side-byside; a dog clutch is provided on the end of each driving rod of the stand having the motor and corresponding formations are provided on the ends of the driving rods of the additional stands.
Patent GB-943998-A (GB)
Title: Improvements relating to the refining of lubricating oils
Inventor: DEMEESTER JACQUES
IPC: C01G49/00
Filed: 1962-02-27
Abstract: A hydrofinishing process for producing lubricating oils having improved colour and oxidation stability comprises treating the oils with hydrogen at elevated temperature and pressure in the presence of a catalyst comprising the oxides of iron, cobalt, and molybdenum incorporated with a support prepared by calcining a trihydrate alumina, for example hydrargillite, at a temperature in excess of 650 DEG  C., but not exceeding 900 DEG  C., so that the pore diameter and total pore volume of the alumina are increased. Preferred operating conditions are:- .Temperature.150-340 DEG  C .Pressure.5-80 ats .H2 feed rate.5-150 v./vol. oil .Oil feed rate.0.5-6 v./vol. cat./hr Specifications 913,047, 913,048 and 917,345 are referred toALSO:A catalyst for hydrofinishing lubricating oils comprises the oxides of iron, cobalt, and molybdenum, incorporated with a support prepared by calcining a trihydrate alumina, for example hydragillite, at a temperature in excess of 650  DEG C., but not exceeding 900  DEG C., so that the pore diameter and total pore volume of the alumina are increased.  Specifications 913,047, 913,048 and 917,345 are referred to.
Patent GB-1215825-A (GB)
Title: Improved dental drill cooling device
Inventor: PAJER MILOSLAV
IPC: A61C1/05
Filed: 1968-02-16
Abstract: 1,215,825. Dental drill water supply system. CHIRANA, ZAVODY ZDRAVOTNICKE TECHNIKY, OBOROVY PODNIK, ZAVOD STRASNICE. 16 Feb., 1968 [21 Feb., 1967], No. 7631/68. Heading A5R. Apparatus for supplying water to a dental drill at the same pressure as its air supply comprises a pipeline 9 through which flows water from a pressurized source via a filter 6 and a non-return valve 5 into a water heater 1 from which water is taken for a tumbler (pipe 10), a dental syringe (not shown) and the drill (pipe 11). Air flows through pipe 14 to the drill and to one side of a pressure regulator 2 via pipe 15. In the regulator, the air acts on a movable membrane, e.g. a diaphragm or the like to produce an equivalent pressure in the water supply on the other side of the diaphragm downstream of the non-return valve 5. The apparatus described with reference to Fig. 2 (not shown) is modified by the addition of a pneumatic 3-way control valve (3) in the air line, one branch of which connects with the pressure regulator. Suitable regulators are depicted in Figs. 3 and 4 (not shown), the movable membrane being a piston in the first and a diaphragm in the second.
Patent GB-122619-A (GB)
Title: Improvements in or relating to Collapsible Baby and Wheeling Chairs, Carriages and Cradles or Children's Beds.
Inventor: KOHLMAN DIRK LODEWIJK
IPC: B62B7/08
Filed: 1918-05-07
Abstract: 122,619. Kohlman, D. L. Jan. 19, 1918, [Convention date]. Addition to 108,697. Perambulators and hand-propelled vehicles; folding and collapsible vehicles.-A folding baby carriage serving also as a chair and a cradle comprises members 2 hinged to one pair of legs 1, upper members 6 hinged to the members 2 and detachably supported on the legs 3, and a bottom 7 hinged to the members 2 and connected by suspended links 9 to the members 6. A seat 5 hinged to the members 2 and a table 8 are provided. Handles 12 are hinged to the legs 3.
Patent GB-594482-A (GB)
Title: Improvements in or relating to the attachment of end fittings, couplings and like hose fittings
IPC: F16L37/05
Filed: 1945-03-27
Abstract: 594,482. Hose-end fittings. BELL'S ASBESTOS & ENGINEERING, Ltd., and DAVEY, A..C. V. March 27, 1945, No. 7679. [Class 99 (i)] A device for attaching end fittings, couplings or the like to hoses, Fig. 1, has a plurality of wedgeshaped clamping members 4 on which a sleeve 10, with a flared outer end, is slid to close together the clamping members , and grip the hose between the latter and a tailpiece inside the hose. The clamping members may be made separately or from a tube, Fig. 3, which has an outer cylindrical surface, inner tapered and cylindrical surfaces 2 and 2a respectively and slots 3 cut in from the thicker end. The finger or clamping members 4 are then bent outwardly until the tapered portion of the bore becomes cylindrical. Alternatively the outer bore may be turned to a taper and the inner bore cylindrical and the slots cut as above. For a tightfitting clamping member the outside as well as the inside may be cut in the taper and then slotted as above. The slots may be formed helically or straight. In a modification a washer may be placed on the tailpiece tight against the pipe end and an extension of the outer sleeve is then spun over this washer. The washer may be formed integral with the tailpiece in the form of a flange. For joining two hoses, two outer sleeves are employed to slide on either end of a clamping member slotted from the centre outwardly.
Patent GB-540837-A (GB)
Title: Frequency changing circuits particularly for the reception of ultra-short electromagnetic waves
IPC: H03D7/02
Filed: 1940-04-30
Abstract: 540,837. Wireless receiving circuits. STANDARD TELEPHONES & CABLES, Ltd., and EARP, C. W. April 30, 1940, No. 7797. [Class 40 (v)] In a frequency changing system comprising a diode valve and a valve having a cathode, an anode and at least one intermediate grid electrode in which the last-mentioned valve is arranged as an oscillator and the cathodes of both valves are connected to a point of constant potential over a common connection including an oscillatory circuit tuned to the frequency of oscillation or an harmonic thereof, the signal input and the intermediate frequency output circuit are connected to the anode of the diode. As shown, an oscillator pentode P and a diode D are contained in one envelope V1. Pentode P is arranged to oscillate at for example 8 Mc/s under the control of a piezo-electric crystal X. Signal energy at for example 35 Mc/s is fed from an amplifier V2 via tuned circuit L2C2 and condenser C3 to the diode anode, the bias for which is supplied by the byepassed resistance R4 due to rectification of oscillator voltage, the inductance L3 acting as a signal frequency choke. A tuned circuit L1C1 in the cathode lead selects the second harmonic of the oscillator frequency which is delivered to the diode at the cathode and rectification again produces a second harmonic of 32 Mc/s which is used as the oscillation for frequency changing. This gives an intermediate frequency of 3 Mc/s in L3 which is fed through a tuned circuit L4, C5 to an amplifier V3. The pentode may be a triode or tetrode and the valves may be in separate envelopes.
Patent GB-330567-A (GB)
Title: Improvements in or relating to the cooling of rotary engines and the like
IPC: F01B3/00
Filed: 1929-03-11
Abstract: 330,567. Craig, J. F. N. March 11, 1929. Revolving-cylinder pumps ; heat of compression, absorbing.-A rotating-cylinder compressor is cooled by providing fan blades 32, on the cylinder block, which draw air over ribs 31 formed on a distributing valve plate 14. The pistons, reciprocating in parallel bores 16, are kept in contact with a swash plate 13 by a spider 17, and the pressure of the cylinder block on the valve plate is relieved as described in Specification 330,527. A shroud 33 attached to the fan blades 32, which are rearwardly inclined at their inner edges, causes the air to flow over the cylinder block. Specification 300,215 is also referred to.
Patent GB-1299241-A (GB)
Title: Contact device for enabling the dynamic measurement of semiconductor parameters
IPC: G01R1/073
Filed: 1970-02-18
Abstract: 1299241 Probes LICENTIA PATENT VERWALTUNGS GmbH 18 Feb 1970 [28 Feb 1969] 7871/70 Heading H2E Part of a testing device for semi-conductors 6 comprises a circular resessed substrate 1 made of quartz or ceramic and flat inwardly directed electrical contacts 2, secured to the substrate by soldering and having contact portions, which may include anti-abrasion coatings 5, e.g. tungsten carbide, at the free ends. The contacts may be formed from a self-supporting metallic foil, using photo mask etching techniques, and having the abrasion resistant rating vapourdeposited thereon. Alternatively a temporary substrate may be used and the metal foil applied thereto by spluttering or vapour-deposition.